3 prong cord.

I'm having a little dilema. I just got a portable DVD player from Minitek.
I plug a cord into the AV out jack. When I plugged it into the audio-video input jacks on my tv it didn't work.

But that's not my quest. I want to know how a cord which has 1 prong on 1 end and 3 on the other splits the signal. I have a red ,white,and yellow prongs on the end with colors the correspond to each jack. I want to know how if the signals go in through 1 connection how do they split and into 3 connections. Does each signal go to eachprong or do they majicaly go to certain prongs?

If you look closely at the "single" connector, which plugs into your DVD player, you'll likely see that there are, in fact, several metal contacts, each separated from the others by a strip of plastic. The cable actually consists of three independent signal wires, each connected to one of the three contacts on the "single" connector.